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Old October 31st 17, 08:02 AM posted to sci.astro.amateur
Gerald Kelleher
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Default Time and timekeeping

On Tuesday, October 31, 2017 at 12:47:02 AM UTC, palsing wrote:
On Friday, October 27, 2017 at 6:56:03 AM UTC-7, Gerald Kelleher wrote:

So much for correcting a reckless conclusion which tried to subvert the principles of the Lat/Long system with the nonsensical Ra/Dec format...


Tell us, Gerald, what exactly is 'nonsensical' about the Ra/Dec format?


Both the RA/Dec and Lat/Long timekeeping systems are outriggers of the calendar format which renders the natural 365 1/4 rotations per orbital circuit into a more manageable format of 1461 rotations for 4 annual circuits. The 24 hour weekday and its rotation of February 29th corrects the annual 6 hours worth of orbital distance that is dropped every orbit calculated on a 365 day cycle so after 4 cycles that amounts to one day and one rotation ( 6 hours* 4).

The Lat/Long system came first and is inextricably linked with the Equation of Time. It came first because it not only creates the average 24 hour day but also assigns a rate of rotation as 15 degrees per hour or 4 minutes for each degree of rotation. The amazing trick of converting 'average' to 'constant' allows the Lat/Long system designed around the Earth's geographic rotational traits to work with timekeeping and the basis of everything including the GPS system.

RA/Dec is an extension of the 24 hour system however rotation is already taken up with the Lat/Long system and the fact that one rotation is anchored to the sunrise/noon/sunset/ midnight cycle and especially the noon observation. It is impossible to justify RA/Dec in dynamical terms because it loses cause and effect between the weekday and rotation and that, for any person, is unforgivable as a concept.











It is essential for locating objects in the night sky, and in that regard, it is an essential tool for astronomers, both amateur and professional. Virtually everyone understands this very well, except, obviously, yourself. It has little, if anything, to do with timekeeping on Earth, and in no way is it attempting to "subvert the principles of the Lat/Long system"... now THAT notion is truly nonsensical!

It will take you many years to unlearn what you think you know about astronomy, for right now it is essentially nothing at all...